FLAC to WAV Converter

FLAC is lossless, but many audio editors, DJ apps, samplers, video editors and older devices only take WAV. This converter unpacks FLAC into WAV in your browser and, by default, keeps the sample rate and bit depth, so the WAV holds exactly the same samples as the FLAC. Tags can be carried over as WAV INFO fields. Batch conversion is supported and nothing is uploaded.

How to use this tool

1. Choose one or more .flac files.
2. Keep "Same as the FLAC" for a bit-for-bit copy, or pick 16-bit, 24-bit or 32-bit float.
3. Optionally change the sample rate or make it mono or stereo.
4. Press Calculate and download the WAV files.

Formula

WAV size (bytes) = header + sample rate × channels × bytes per sample × seconds

The header is 44 bytes for 16-bit, 68 bytes for 24-bit (WAVE_FORMAT_EXTENSIBLE) and 58 bytes for 32-bit float, plus the INFO tags if kept. The FLAC is decoded by your browser at its own sample rate; each sample is written back as the same integer (the tool detects how the decoder scaled the samples and reverses it exactly). Very long files and files the browser cannot decode are converted by the ffmpeg engine (about 30 MB, downloaded once), which writes the WAV directly.

Example

A 4-minute stereo CD-quality FLAC (16-bit, 44.1 kHz) of about 25 MB becomes a WAV of 44 + 44,100 × 2 × 2 × 240 = 42,336,044 bytes (40.4 MB). A 24-bit / 96 kHz FLAC of the same length becomes 96,000 × 2 × 3 × 240 ≈ 138 MB of WAV.